These derivatives are readily obtained by alkylation of 2 - mercaptopyridine and alkyl halides under alkaline conditions.这些衍生物可以容易地在碱性条件下通过 2- 巯基吡啶和卤代烷的烷基化而得到.The different contents of various alkylation products were ob...
The Octane Number is retained owing to HZSM 5 � � s excellent ability of aromatization, isomerization and alkylation.HZSM-5沸石对汽油的降烯烃作用得益于其优异的芳构化 、 异构化和烷基化性能.These derivatives are readily obtained by alkylation of 2 - mer...
Some, including an esterase, may be on the outside of intact lysosomus.包括酯酶的一些, 可以位于完整溶酶体的外表面.Certain drugs and chemicals also have been shown to decrease the activity of pseudocholine esterase.有些药物和化学制品也表明能降低拟胆碱酯酶的活性.Th...
“该死的，等一下”，明迪愤愤地说道，“谁也没说过要过夜。”"Wait a damn minute," Mindy spat. "Nobody said anything about staying overnight."斯坦 、 明迪 、 约翰和我要来一次四人约会.Stan, Mindy, John and I are going on a double date.加里·马歇尔: 《单身公寓》 、 《快乐日子》、《拉维恩和雪莉》 、 《...
那座破棚屋的墙向外倾.The walls of the dilapidated shed lean outward.在女性中学生中, 为外倾性5.2%, 神经质0.0%,精神质3.9%.In the female students, extraversion 5.2 %, neuroticism 0.0 % , and mentation 3.9 %.房子的墙有点往外倾.The walls of the house lean outwa...
Peppermint leaves are believed to relieve tiredness and nasal stuffiness.据信薄荷叶可以减轻疲劳和鼻塞。I sank my teeth into a peppermint cream.我咬了口胡椒薄荷味奶油软糖。Add a few drops of peppermint flavouring.加几滴薄荷香油....
She produced still lives and landscapes but above all moody yet incisive portraits of her mother, local school girls, women workers in town (profiles of a pensive, aristocratic looking seamstress dressed in black stand o...